Description
Pinned menu intermittently shows blank
Steps to Reproduce
0. Pin any menu
1. Load any list within unified navigation, e.g. incident_list.do
2. Open the devtools (cmd+alt+i)
3. Open a new tab on the same instance
4. Focus back on the devtools window, go to Application > Storage > Local Storage > press the clear button next to the filter input
5. Don't focus back on the first tab and press cmd+R to refresh the page while it is unfocused
Expected: First tab should show with pinned menu
Actual: First tab shows but menu is not pinned and the pinned section is blank
Workaround
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Related Problem: PRB1641706